Motorists are being reminded the Mountain Road will be closed for most of tomorrow, from 10am.
It's so preparations can be made for the one-way system which will operate during TT fortnight.
The road will reopen later tomorrow, after which it will be one-way, in the direction of the course, until Monday, June 15.
Two-way traffic will remain between the Creg-ny-Baa and Douglas throughout the festival period.
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